I have a Python asyncio server written using the high-level Streams API. I want to enable TLS on an already established connection, as in STARTTLS in the SMTP and IMAP protocols. The asyncio event loop has a start_tls() function (added in Python 3.7), but it takes a protocol and a transport rather than a stream. The streams API does let you get the transport via StreamWriter.transport. I don't see a way to change the transport, which would be required after calling start_tls(). Is it possible to use start_tls() with the streams API? Continue reading...
